Cressida Bonas, 24, has been approached by leading designer brands and high street chain stores that have fallen for her fashion style.

Friends are laughing at the big money offers as “scruffy” Cressida prefers the “charity shop look”.

She has turned down the deals for a more lowly-paid teaching job.

Posh Cressida who has been dating Harry, 29, for nearly 18 months, has been photographed out on the town with the prince in trendy jeans, dresses, beanie hats, and in faded denim dungarees at a pop festival.

Her look has got the lucrative offers rolling in but she prefers to teach at the London tutoring agency run by her brother Charles.

An insider said: “Cressida has turned down a fortune for huge modelling jobs for fashion houses.

“She would make a terrific model but she won’t do it. We are all laughing as she goes for the scruffy charity shop look rather than designer labels.

“She is not the sort of girl to swan around doing nothing.

“She’s got a terrific brain and wants to use it. It’s important to her to earn her own money but she has to be careful.

“In many ways her life is on hold as she can’t do what she wants because of dating Harry – it wouldn’t look right.”

Friends say that Cressida, who studied dance at the renowned Trinity Laban Conservatoire in Greenwich, London, wanted to act and dance.

But she has had to put such a public career on the back burner as it would be unseemly for a royal girlfriend.

“Cressida has turned down a fortune for huge modelling jobs for fashion houses”

An insider

After leaving the music and dance college last year she started at the Bonas MacFarlane centre based in south London. It is billed as “one of London’s longest-established and most successful private tuition agencies”.

Instead of flouncing down the catwalk Cressida has been studying education.

She has also taken up a £20,000-a-year theatre marketing role.

Cressida has been tipped as a bride for Harry who was introduced to her by his cousin Princess Eugenie.

The couple have been on romantic safari-style holidays and were photographed cuddling on the slopes at Verbier in February last year after the prince returned from his second Army tour of Afghanistan.

Rumours about an engagement were fuelled recently when it was announced Apache helicopter ace Harry was taking a desk job in London helping to organise royal ceremonial events.

He is consoling Cressida after the tragic news that her stepdad Christopher Shaw, who played a “massive part” in her life as a child, had been found dead at his home in Salisbury, Wilts.

Mr Shaw, 76, an ex-merchant banker, is believed to have killed himself with a pills overdose.

Her mum Lady Mary-Gaye Curzon was with him for nearly six years.

Cressida was ten when they split up in 2000 when he went off with designer Eliza Dugdale.